* {
  margin: 0;
  padding: 0;
}
a {
  color: black;
  text-decoration: none;
}
.custom-menu {
  height: 50px;
  width: 100%;
  background: rgb(216, 209, 210);
  /* 实现整体拖拽 */
  -webkit-app-region: drag;
}

.custom-menu ul {
  list-style: none;
}

.custom-menu ul li {
  cursor: pointer;
  display: inline-block;
  width: 70px;
  line-height: 50px;
  text-align: center;
  margin-left: 10px;
  /*取消li菜单拖拽 */
  -webkit-app-region: no-drag;
}

.setwindow {
  width: 100px !important;
  float: right;
}

.clearfix:after{
  content: "020"; 
  display: block; 
  height: 0; 
  clear: both; 
  visibility: hidden;  
  }

.clearfix {
  /* 触发 hasLayout */ 
  zoom: 1; 
  }